نتایج جستجو برای: nd
تعداد نتایج: 31752 فیلتر نتایج به سال:
Introduction: The coupled Sm-Nd systematics of lunar samples has been extensively studied for estimating the timescale of lunar differentiation [1-3]. The published datasets yield consistent ages for Nd isotopic closure within the lunar mantle of ~200 Myr after CAI formation. Although this time constraint is consistent with estimates derived from Hf-W chronometry of the Moon (>60 Myr after CAI ...
In this paper, undoped TiO2 and Ag-Nd-codoped TiO2 nanocomposites with different molar ratios of dopants were synthesized by the sol-gel method using starch as a natural additive. Structures were investigated by FT-IR and UV–Vis spectroscopy, SEM, and XRD methods. Moreover, the direct band gap was calculated by Tauc's approach. Furthermore, photocatalytic activity of all s...
هدف از این تحقیق استفاده از تاثیر کیتوزان روی شکلگیری ترکیبات هتروسایکلیک آروماتیک آمین(HAAs) در فیله فیل ماهی (Husohuso)سرخ شده بهمنظور جلوگیری از تشکیل ترکیبات مضر بعداز پخت بود. استفاده از افزودنی طبیعی مانند کیتوزان محلول در اسید(1و 5/0) درصد در محتوی رطوبت، pH و تغییرات وزنی طی پخت (سرخ شده) اثر معنیداری داشت(05/0≥p).در فیله سرخ شدهمقادیرHAAsاز جملهPhIP (Nd -83/0 ...
Let f=∑k=0∞ckh2k, where {hn} is the classical Haar system, ck∈ℂ. Given a p∈(1,∞), we find sharp conditions, under which sequence {fn}n=1∞ of dilations and translations f basis in space Lp[0,1], equivalent to {hn}n=1∞. The results obtained depend substantially on whether p≥2 or 1<p<2 include as endpoints Lp-scale spaces BMOd Hd1. proofs are based an appropriate splitting set positive integers N=...
The image provided by Tomoya Takada and colleagues shows a cross-sectional SEM micrograph of acrylic denture base resin impregnated with nanodiamond (ND). This study aimed to evaluate the effect ND impregnation on thermal conductivity commercially available resins. It was found that maximum when small amount NDs. colors ND-impregnated resins were also compared using spectrophotometric measureme...
The Euclidean group (Rn,+) where (n?N, plays a key role in harmonic analysis. If we consider the Lebesgue measure ()nd?xR as the Haar measure of this group then 12(2)()nd?x=d?RR. In this article we look for LCA groups K, whose Haar measures have a similar property. In fact we will show that for some LCA groups K with the Haar measure K?, there exists a constant such that 0KC>()(2)KKK?A=C?A for ...
Frontal and temporal lobe sources for electrical activity associated with auditory controlled attention (negative difference, Nd) were sought for comparison with those reported to arise from the earlier detection of stimulus-change (mismatch negativity, MMN: Jemel et al. 2002). In two sessions a month apart (T1 and T2), 14 subjects were presented with a 3-tone oddball passively, then as a discr...
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